I recently read a book called True And False by David Mamet. It's a book about acting. I read it because my awesome girlfriend is into his ideas about acting, and I'm into knowing about what she's into (I think of the great Samuel Jackson scene in Pulp Fiction about being a vegetarian, about 1:50 into this classic clip). So, while I have no real experience with the subject he's writing about, turns out it's a really great book for anyone interested in any sort performance, or craft, or really just living in general. One of many great passages:
"While you are intent on an objective, you do not have to compare your progress to that of your peers, you do not have to worry about a career, you do not have to wonder if you are doing your job, you do not have to be reverent to the script -- you are at work. Not only is it the simple solution to a seemingly complex problem, it is the right solution. Not only is it the right solution, it is the only solution."
Good stuff. One more for good measure:
"...no one cares what you believe, and if you've got a goal to accomplish you'd best set about it. To deny nothing, invent nothing -- accept everything, and get on with it."